BUTTERFLIES OF BORNEO. 97 



The male might readily be confused with L. delila, 

 Staud. but the female is so very different to the female 

 of that species that I have little hesitation in separating 

 this low country form from the mountain species L. 

 delila. The genus Lethe is in need of careful revision, a 

 work that is, however, only possible to one who has 

 access to the types of the various species. 



50. Lethe delila, Staud. 



Lethe delila, Staudinger, Iris, vol: ix, p. 225, pi. v, f. i. 

 (1896) 

 Mt. Kina Balu. 



51. Lethe europa, Fab. 



Papilio europa, Fabricius, Syst. Ent. p. 500, (1775). 

 Occurs in the Indian region, Malay Peninsula, Siam, 

 Sunda Is., Philippines, Hainan, Formosa, China. 



52. Lethe per imede, Staud. 



Lethe perimede, Staudinger, Iris. vol. ix, p. 226, Q.896). 

 Apparently confined to Borneo. 



53. Lethe darena, Feld v . 



Lethe darena, Felder, Reise Nov. Lep. iii, p. 498, pi. 68, 



f. 4.5 (1867). 

 Sub-sp. Lethe darena borneensis, Staud. 



The typical form occurs in Java ; the sub-species oc- 

 curs on Mt. Kina Balu. 



54. Lethe dora, Staud. 



Lethe dora, Staudinger, Iris, vol. ix, p. 22Q (1896) 

 Borneo only. 



Genus Ypthima. 



55. Ypthima pandocus, Moore. 



Ypthima pandocus, Moore, Cat. Lep. Mus. E.I.C. i, p. 

 235, (1857). 

 Malay Peninsula and the Sunda Is. 



R. A. Soc, No/41, 1904 6 



